Shotgun Forcing Cone Compatible Bore Diameter - Maximum 11/16 in Compatible Firearm Caliber 20 Gauge Stem Diameter 0.19 in Abrasive Length 1 5/8 in Overall Length 10 in Abrasive Material Silicon Carbide Grit 180 Compatible Tool Type CNC Machine Drill Drill Press Primary Material Application Brass Compatible Bore Diameter - Minimum Not Applicable End Marking Color Not Applicable Grade Medium Stem Marking Color Not Applicable